In the circle below, chord \(\overline {AB}\) is extended to meet the tangent \(\overline {DE}\) at D. If \(\overline {AB}\) = 9 cm and \(\overline {BD}\) = 3 cm, find the length of \(\overline {DE}\).

In the circle below, chord \(\overline {AB}\) is extended to meet the

1.	In the circle below, chord \(\overline {AB}\) is extended to meet the tangent \(\overline {DE}\) at D. If \(\overline {AB}\) = 9 cm and \(\overline {BD}\) = 3 cm, find the length of \(\overline {DE}\).
A.	5 cm
B.	4 cm
C.	\(\sqrt {27} cm\)
D.	6 cm
Answer» E.

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In the circle below, chord \(\overline {AB}\) is extended to meet the tangent \(\overline {DE}\) at D. If \(\overline {AB}\) = 9 cm and \(\overline {BD}\) = 3 cm, find the length of \(\overline {DE}\).

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